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Heating appliance heating element and preparation method thereof

A technology for heating elements and heating appliances, which is applied to tobacco and other directions, can solve the problems of difficult control of resistance, poor temperature uniformity, and low resistance value accuracy, and achieve the effects of preventing corrosion damage, improving product performance, and facilitating temperature control.

Active Publication Date: 2020-08-14
SICHUAN SANLIAN NEW MATERIAL CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The current technology of heating elements for heating appliances is mainly based on "thick film printing technology" for high-temperature co-firing. One is to print heating lines on ceramic substrates and then sinter them. The disadvantage is that the resistance accuracy is low and the heating lines cannot be fully covered. At the same time, the ceramic substrate is brittle and easy to break during use; the other is to use stainless steel as the substrate, then print a layer of insulating material, and then print the heating circuit on the insulating material. This method also has the problem of uncontrollable resistance. At the same time, there is also the problem of the bonding strength between the insulating layer and the stainless steel, which is easy to peel off
Both of them generate heat through the printed heating line, and then transfer the heat to the substrate through the insulating layer, so the temperature uniformity is poor

Method used

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  • Heating appliance heating element and preparation method thereof
  • Heating appliance heating element and preparation method thereof
  • Heating appliance heating element and preparation method thereof

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preparation example Construction

[0040] Another object of the present invention is to provide a method for preparing a heating element of a heating appliance, the structural form adopts the aforementioned heating element of a heating appliance, and the preparation method includes the following steps:

[0041] Step 1, making the heating sheet 1, engraving the heating circuit on the body of the heating sheet 1 by means of laser engraving.

[0042] Step 2, configure the insulating base material;

[0043] According to the weight ratio, the composition of the insulating base material is as follows: silicon dioxide: 30-60%, aluminum oxide: 3-20%, calcium oxide: 2-20%, boron oxide: 1-10%, barium oxide: 1-10% %, zirconia: 1-10%;

[0044] Weigh the required weight of raw materials according to the above ratio, and the particle size of the raw materials is controlled at 1um-20um, preferably 2um, and then mixed and dried; the formula of the insulating base material here is the key to determine the combination of the in...

Embodiment 1

[0053] The present invention is implemented according to the following steps:

[0054]In step 1, nickel-iron alloy is used as a heating sheet; laser resistance adjustment is performed on the nickel-iron sheet. According to the required resistance of 0.9 ohms, the circuit of the heating area and the electrode area is designed, and then the circuit is processed on the nickel-iron alloy sheet by laser. The alloy sheet is set in a pointed shape, mainly for the convenience of inserting into the shredded tobacco during use; the circuit of the electrode area is thicker than that of the heating wire, mainly to reduce the calorific value of the electrode area, thereby reducing the energy loss and electrode temperature of the electrode area. Laser processing is used to precisely control the resistance. Afterwards, clean the resistance-adjusted heating element: ultrasonic cleaning with alcohol, mainly to clean the impurities on the surface, so as not to affect the combination of the hea...

Embodiment 2

[0063] In step 1, nickel-iron alloy is used as a heating sheet; laser resistance adjustment is performed on the nickel-iron sheet. According to the required resistance of 1.1 ohms, the circuit of the heating area and the electrode area is designed, and then the circuit is processed on the nickel-iron alloy sheet by laser. The alloy sheet is arranged in a pointed shape, and the circuit in the electrode area is thicker than the circuit in the heating wire. Afterwards, use alcohol to ultrasonically clean the blocked heating element.

[0064] Step 2, configure the insulating base material: according to the designed weight ratio, weigh the required weight of raw materials, the particle size is 1-20um, preferably 2um, and then mix and dry. The composition of the insulating base material is as follows: silicon dioxide: 58%, aluminum oxide: 18%, calcium oxide: 7%, boron oxide: 7%, barium oxide: 4%, zirconium oxide: 6%.

[0065] Step 3, configuring the colloid, weighing terpineol 61%...

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Abstract

The invention belongs to the technical field of tobacco heating appliances, and relates to a heating appliance heating element and a preparation method thereof. The heating element comprises a metal heating sheet, and the heating circuit of the heating sheet is formed by laser engraving. According to the metal heating element, ferro-nickel alloy with a high resistance temperature coefficient is used as a heating sheet, and then an insulating layer is sintered on the surface of the heating sheet. The heating element has the advantages of uniform heating, stable resistance, convenience in temperature control and the like; and the arranged insulating layer can protect the heating piece and can prevent the heating piece from being corroded and damaged, the insulating base material proportion is optimized, after the sintering process is combined, the heating piece can be well matched with the ferro-nickel alloy, the product performance is improved, and the advantages of being high in strength and long in service life are achieved.

Description

technical field [0001] The invention belongs to the technical field of tobacco heating appliances, and more specifically, the invention relates to a heating element of a heating appliance and a method for preparing the heating element of a heating appliance. Background technique [0002] The heating device is to precisely control the temperature of the heating element to make the tobacco bake some smoke substances under the condition of not burning. On the premise of achieving the experience of smoke, the generation of harmful substances is reduced. The requirements are relatively high, so the resistance accuracy and temperature uniformity of the heating element are very important. [0003] The current technology of heating elements for heating appliances is mainly based on "thick film printing technology" for high-temperature co-firing. One is to print heating lines on ceramic substrates and then sinter them. The disadvantage is that the resistance accuracy is low and the h...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A24F40/46
CPCA24F40/46
Inventor 包毅邓永汤磊谢力黄玉川
Owner SICHUAN SANLIAN NEW MATERIAL CO LTD
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